Extension rule or measuring-stick



(No Model.)

G. H. MASSA.

EXTENSION RULE 0R MEASURING STICK.

Patented Jan. 4,1898.

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UNITED STATES PATENT @rricn.

GUSTAV HENRY MASSA, OF CORONA, NEW V YORK.

EXTENSION RULE OR MEASURlNG-STICK.

SPECIFICATION forming part of Letters Patent No. 596,896, dated January4, 1898.

Application filed July 21, 1897. $erial No. 645,351. (No model.)

.To all whom it may concern:

Be it known that I, Gosrnv HENRY MASSA, residing at Corona, in thecounty of Queens and State of New York, have invented oertain new anduseful Improvements in Exten sion Rules or Measuring-Sticks and SimilarDevices, of which the following is a full and complete specification,such as will enable those skilled in the art to which it appertains tomake and use the same.

This invention relates to rules, measuringsticks, and similar devices ofthis class; and the object thereof is to provide an extensible rule,consisting of a plurality of parts or sections, which are adapted toslide one upon another and which are provided with improved means forlimiting the movement thereof and to hold the same in connection.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which Figure l is a sideview of my improved rule or measuring-stick, showing the separatesectionsthereof folded together; Fig. 2, a similar View showing theseparate sections extended to their fullest extent; Fig. 3, a planviewof the device as shown in Fig. 2; Fig. at, a crosssection on theline 4 4 of Fig. 3, and Fig. 5 a longitudinal section on the line 5 5 ofFig. 3.

In the drawings forming part of this specification, the separate partsof my improvement are designated by the same letters of reference ineach of the views, and in the practice of my invention I provide a ruleor measuringstick for the purpose herein speci iied,which consists ofseparate sections,which are preferably four in number and which aredesignated by the letter A, and each of these sections is precisely thesame in cross-section and three are of exactly the same length, one ofsaid sections being preferably one inch shorter than the others, wherebyI provide a rule which is exactly forty-eight inches long. The length ofthese sections, however, is im material, and the length of the rule ormeasuring-stick is immaterial, and each of said sections is provided inits opposite sides with a groove a, which extends the full lengththereof, and sunk into the two central sections at each end aretransverse plates a the ends of which are bent at right angles to thecent section when the separate sections of the rule are extended totheir fullest extent, as shown in Figs. 2 and 3, by means of the springsof. The separate sections of the rule or measuring-stick are locked atthe limit of their extension, and whenever it is desired to fold saidsections together, as shown in Fig. 1, the springs of are depressed andthe corresponding sections are enabled to slide thereover.

As hereinbefore stated, the separate sections of the rule may be of anydesired form in cross-section and they may also be of any desiredlength, and the scales thereon may be of any desired kind or character.

It will thus be seen that I accomplish the object of my invention bymeans of a construction which is well adapted to produce the result forwhich it is intended, and it will also be apparent that changes in andmodifi cations of the construction described may be made withoutdeparting from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, I claim as new and desire to secureby Letters Patent- 1. A rule or n1easuring-stick consisting of separatesections which are similar in form in cross-section, each of saidsections being provided in its opposite sides with a longitu- 10 end ofthe adjacent section, when said sections are extended, substantially asshown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in the presence of the subscribing witnesses, this 1 17th day ofJuly, 1897.

GUSTAV HENRY MASSA.

Witnesses:

FRED. MUNZ, WV. J. LIGHT.

